Dermal vents (5)
I believe the answer is:
pores
'dermal vents' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pores that I've seen before include "Minute openings in the skin" , "Tiny holes in the skin" , "Ropes with small holes" , "Small openings in the skin" .)